Species Account

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Summary Data

Season (Adult / Immature):

National Status: Nb

Local Status: Very rare and very local resident.

Local Record: Grade 3   See here for explanation

Flight time: Jul-Aug.

Forewing: 11-15mm.

Foodplant: Bilberry, and related plants.

Regional breakdown:

Year first recorded2005188319751930
Year last recorded2006188320141930
Number of records21281
Number of individuals20390
Unique positions21251
Unique locations2191
Adult records21280
Immature records0000

For the county, we have a total of 32 records from 13 sites. First recorded in 1883.


1866 Manchester Treble-bar 02
© Tony Moverley 13th August 2017
1866 Manchester Treble-bar 01
© Dave Williamson 2nd July 2005

Species Account

Sutton & Beaumont, 1989: Not recorded since Porritt (1883-86). The only locality Porritt mentioned was Thorne Moors (VC63) in 1877. However, there are twelve specimens from Eccleshall Wood, Sheffield in the Sheldon collection (Garland, 1979). It is surprising that this species does not occur in Yorkshire, since we have several apparently suitable sites and it is within the distribution mentioned by Skinner (1984). The species occurs quite widely to the north of Yorkshire, the closest site being just to the north-east of the High Force in Teesdale (Dunn & Parrack, 1986).

Beaumont, 2002:
VC64. Ribblehead, one fresh moth 3.8.1997 (NG); Low Bentham, 12.8.1997 (TMW). The first Yorkshire records in over a hundred years.

Argus 50, 2005: The only other recent Yorkshire records are from the west of VC64.
VC62. Haxby, 18.8.2005 (TJC). NEW VICE-COUNTY RECORD.

2012 (CHF): We now have several records of this moth from the extreme west of VC64 on the Lancashire border, mostly flying by day.

See background to species accounts.  Index of Vernacular names - Search - Random Species